The z·ne blog.

Essays and guides on focus, attention, and deep work.

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    In-Ear EEG, Explained: How Earbuds Read Brain Waves

    In-ear EEG uses tiny electrodes inside the ear canal to measure the brain's electrical activity. Learn how this wearable EEG technology works, what it can tell you about your focus, and how it compares to traditional scalp EEG.

    July 22, 2026